Answer:
The answer are as followed: B is the correct answer, hope that helps :)
It's true charged particles are always acted on by an electric field.when the velocity of the electron is parallel to the magnetic field, the magnetic force vanishes.
The answer is True. Acceleration is a vector quantity.
Impermeable is a substance that is water proofed e.g glass, aluminium e.t.c <span />
The question is asking to describe and state and calculate what do the observer on the earth measure for the speed of the laser beam, and base on my research, the answer would be v = 1bc, I hope you are satisfied with my answer and feel free to ask for more
